Hi. I'm a 44 year old female with a hx. of DVT and Pulmonary emobolisms. I have been on Coumadin since I was 17. I'm negative for all known clotting disorders, but we know that it is hereditary . I've been having blood in my urine intermittently. I was checked out once by my MD and no infection was found, and he said if it occurs again I would have to see a urologist and I would not like the test they would perform. My INR (which fluctuates way too much) at the time was low, so it wasn't a result of my blood being too thin. So I've put off telling him that it has occurred again. I recently had leg and groin pain, as well as some pain breathing and went to the ER. My INR was 0.94, so too low to cause bleeding . I noticed the next day that I had more blood in my urine in the am and throughout the day (generally it is in the morning only). I plan on making an appt. with my doctor to get it checked but know it's not an infection as I am asymptomatic . Any suggestions as to what could be causing this?